Heat retaining and transmitting device



H. H..COLESTOCK.

HEAT RETAINING AND TRANSMITTING DEVICE. APPLICATION FILED SEPT 24, 191B.

1,3?2,6%3, Patented Mar. 22, 1921.

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witnessed I fnve'nzar H. H. COLESTOTCK HEAT RETAINING AND TRANSMITTING DEVICE.

APPLICATION FILED SEPT 24,1918.

Patented Mar. 22, 1921iv 2 SIHEETSV-SHEET HARRY HUNTER COLESTI'OCK, 01 ST. PAUL, MINNESOTA.

HEAT BETAINENG AND TBANSI EIZTTING DEVICE.

Specification of Letters Patent.

Patented Mar. 22, 11921..

Application filed September 24, 1818. Serial No. 255,542.

To all whom it may concern:

Be it known t iat l, HARRY HUNTER Conns'roon, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State 01 l dinnesota have invented a new and useful Heat Retaining and Transmitting Device.

The objects of my invention are, first to provide foot or bed warmer adapted to receive highly-heated materials and to greatly conserve t is heat therein; second, to provide an adjustably attachable counterpart heat-controlling cover that limits the outflow or heat to a given portion or the outer surface or said :t'oot or bed warmer; and, third, provides the means of regulating the same; fourth to provide an opening especially adaptable for the reception or emitting of bulky material and a smaller opening for general use or as a conyeniencc for a hose connection; fifth, to provide suitable insulated stoppers; sixth to provide a -centacle, as above. with an outer fitting re L adapted to connect Wlill an ad ustably-attachable supplementary compartment. and

thereby forming combination suitable for use as lunch box, limited cooker or refrigerator, the said compartment having containers adapted to be adjustably at tached therein in such manner as to (a) maize practical the production of different sizes of sub-compartments and aiiord (2')) a choice as to how said sizes may be an ranged relative to temperature. receiving benefits, and seventh, to provide an etlicient and economical construction particularly in regard to a screw threaded stopper-seat hereinafter described.

I attain these objects by the mechanism illustrated in the accompanying drawings in which- Figure l is a plan view of the bottom side of temperature-receiving receptacle; Fig. 2 a vertical section of entire contrivance taken on the line 2 2 Fig. 1.; llig. 3 shows detached portions of Fig. 2 independently fitted together; e the portion or 2 from which the parts in Fig. 3 are detached; Fig. 5 a. detached portion of Fig. 2.

' On Sheet2 of drawings Fig. 6 is a portion of Fig. 2; Fig. 7 a vertical section of a portion of Fig. 1 taken on the line 7 7, Fig. 1; Fig. 8 a counterpart of aportion of Fig. 6; Figs. 9, 10 and 11 respectively are repetitions of upper portion of 6 except as changed to show three additional of the several possible adjustments of containers; lijig. 12 a portion of Fig. 6 showing a variation in construction. I

Similar characters refer to similar parts throughout the several views, the letters rcferring only to the main separate parts and numerals to their sub-parts.

in the form or my invention herewith illustrated receptacle A. (see Figs. 1, 2 and is awatcntight container (preferably of sheet ietal) adapted to receive highly-heated material such as water, sand etc, and which consists of three permanent walls on its edge side as well as on its intake-lace side (represented herewith as the bottom) and a single wall opposite the said intake-face side. Between these plural walls is provided a suitable space for air, slacked lime, ground cork or any suitable insulatin material desig nated in the drawings as i In the case of the larger opening intended for the reception of stopper C (hereinafter described) the seat for said stopper (instead of being a separately attached flange connection) is secured by simply screw-threading the flanged neck which is formed at the juncture of the inner and outer walls or the insulated portion of the receptacle. This receptacle is provided with fitting to irictionally engage with the correspond ing fittings, respectively, of a counterpart temperaturecontrolling cover and a counterpart compartment (hereinafter described) in such a manner as to admit of adjustment.

The openings to this receptacle are provided with especially designed stoppers (lo-- scribed as follows:

Stopper B (see Figs. sists of four members, v a corlr-clutch-spindle 31, a plu .or-i: a projecting cap Corr-s eeve is permanentl secured in can b the corlri. J V

clutch spindle 31, within which (31) is also permanently securec plug-cor: 32. When stopper B is applied cap 5-2 projects over and covers neck 25.

Stopper C consists of four members, viz: a projecting cap il a counterpart $0 to the same having a screw-threaded portion ll), an elastic washer a2 and an intermediate wall 43, the said projecting cap l1 having an overlap that permanently secures within it the said counterpart l0 as well as elastic washer 42, said elastic washer being situated in the annular groove of the said counterpart $0 outside of its threaded-enterin ortion v I 2: P

4-0, and thus, (when stopper 0 is applied) placing washer 42 at such a distance from extreme temperatures incloscd in receptacle A as to be proof against their destroying effects. The projecting cap 41 and the counterpart l0 thereof, respectively, centrally incase insulating material I.

Part 23 (see Figs. 2 and 6) designates a shim, consisting n'eferably of insulating fiber formed into circular shape.

Temperature-controlling cover D (see- Figs. 2, 3, 5, 6 and 8) consists of a wirerimmed, sheet metal counterpart to the single-wall side of receptacle A and has corrugations as illustrated. This cover is provided with a shield 52 which may consist of rubber, cloth, rubber-cloth or any suitable slightly-insulating material. This cover is also provided with the means of fitting, attaching and adjusting correspond ing to those of receptacle A as well as a supplementary receptacle and storage compartment F described as follows:

This compartment F 'ee Figs. 2, st and 6) is an attachable counterpart to either receptacle A or temperature-controlling cover D and has fittings so as to make it adapted to be attached to the former or jointly attached intermediate the former and the latter. This com aartment is provided w'th an insulated. side wall and a single-wall top (illustrated herewith as a vessel upside down) and is also provided with the means of fitting, attaching and adjusting corresponding toreceptacle A.

This compartment is adapted to receive containers such as vessel G and tray H (see Figs. 2, 6 and 8 to 11 inclusive) which said containers are similar in construction with the exception of a difference in depth. These containers are of wire-rimmed sheetmetal construction and are frictionally-attachably fitted to one another as well as to receptacle A and the single-wall portion of compartment F, and (these containers) are just loose enough to fit to the inside sidewall of said compartment F as to render them easily inserted or removed.

lt should be understood that shield 52 may only be employed for exceptional use, for instance when a softer material than sheet metal is required to rest the feet against, however, the principle involved is at variance with my plan of heat-regulation'to the extent that it retards the fullest outflow of heat, and therefore said shield is not in cluded in my claims.

The principle upon which my plan of temperature-regulation is based, may be more clearly illustrated by a similitude, viz: that when the end of a metallic rod (of a givenlength) is brought into close contact with a heated plate some of thetemperature followsfrom the plate along the rod to its disconnected end, notwithstanding the circumstance of a colder atmosphere through whlch the said temperature must pass;

therefore it necessarily follows that when.

(that is, assuming. a difference in temperature between the inside and the outside of receptacle A) at that portion of the outer surface of receptacle A where said contact takes place. On the other hand when the contact is broken by. separating the said surfaces in question, and air highly ellicient nonconductor) fills the intermediate space, the result is an insulated wall, with insulation corresponding in amount to the thickness of the air space thus produced.

Therefore, the means of controlling the outflow of heat appears in simply increasing or diminishing this space and thereby securing such degree of outflow as may be desired.

llhile the drawings herewith illustrate my invention only in one specific form, I do not limit myself thereby to all the specific detail of construction thereof. '1 have, however, selected such specific form as I deemed best adapted to illustrate my invention in its most complete combination as shown in Fig. 2. It should therefore be understood that the fundamental portions of my invention, (viz. receptacle A and its counterpart temperature-controlling cover clasps or other suitable mechanism as a .means of attaching and adjustment considering such as part of my invention. Furthermore, in order to meet the requirements of cheaper construction I may employ but a single opening to receptacle A and eliminate the central walls of the insulated portions of both it and the stopper as illustrated; in short, I will avail myself of all improvements in construction that experi ,ence and expediency may suggest, that is, within the limitations of myclaims.

I claim:

1. A foot or bed warmer comprising a receptacle having permanently incorporated heat-insulated side and bottom walls, an exposed heat-conducting top wall projecting up and from the inner side of the said heatinsulated side wall, an intake and outlet opening and a stopper to the same.

ceptacle having a permanently incorporated double-walled side and bottom, heatinsula tion between the inner and outer walls of which the said side and bottom consists; an exposed heat-conducting top wall projecting from the inner side of the said doublewalled side; an intake and outlet opening comprising a flanged stopper-seat formed at the juncture of the inner and outer walls of the bottom of the said receptacle and a stopper for the same, all substantially as described.

3. A foot or bed warmer comprising an openable and closable receptacle having an insulated bottom and side wall and a heatconducting wall opposite the said bottom wall and a temperature-controlling cover adapted to be attached in an adjustable manner to, and outwardly overlapping, the heatconducting wall portion of the said receptacle, substantially as set forth.

4. A foot or bed warmer comprising an openable and closable receptacle having an insulated bottom and side wall and a heatconducting wall opposite the said bottom wall, a temperature-controlling cover and means of adjustably attaching the same to the heat-conducting wall portion of the said I receptacle, substantially as described.

5. A foot or bed warmer comprising a receptacle having an insulated bottom and side wall and a heat-conducting wall opposite the said bottom wall, a temperaturecontrolling cover adapted to be attached in an adjustable manner to, and outwardly overlapping the heat-conducting wall portion of the said receptacle, a screw-threaded flanged opening through the said bottom wall, a stopper for said opening comprising a projecting cap having a central body portion, a fiangeedged outer rim, an annular groove inside said flange-edged outer rim and an inwardly-projecting overlap of the flange edge of the said outer rim and a counterpart to the said projecting cap having a central body portion, a screw-threaded portion, an annular groove corresponding to the said annular groove of the projecting cap and an elastic washer, all the said parts of the said stopper being permanently secured together, the said washer being se cured in the annular groove of the said. counterpart outside of the screw-threaded entering portion of the said stopper; space between the central portions of the said projecting cap and counterpart thereto and insulating material incased in said space all substantially as set forth.

6. A foot or bed warmer comprising a receptacle having an insulated bottom and side wall and a heat-conducting wall opposite the said bottom wall, a temperaturecontrolling cover adapted to be attached, in an an adjustable manner, to the heat-conducting-wall portion of the said receptacle, a flanged intake-opening through-and projecting outwardly from-the side wall of the said receptacle, a stopper to said opening consisting of a cap with an annular projection, which projection covers the neck of the said intake opening; a spindle permanently secured to and within the said cap, a corksleeve permanently secured on the outer surface of the spindle and a cOrh-plug perma nently secured within the said spindle, the said spindle having flanged ends, substantially as described.

7. A device or" the character described, comprising an openable and closable receptacle having insulated bottom and side wall and a heat conducting wall opposite the said bottom wall; a temperature-controlling cover adapted to be attached, in an adjustable manner to, and outwardly overlapping, the heat-conducting-wall portion of the said receptacle: a supplementary compartment also adapted to beattached in an adjustable mannereto, and outwardly overlapping, the heat-conducting-wall portion of the said receptacle the said compartment having an insulated side wall and a non-insulated topwall and a fitting at the top portion adapted to receive, in an adjustable manner, the said temperature-controlling cover, and a fitting at its bottom portion adapted to be attached, in an adjustable manner to, and outwardly overlapping, the heat-conducting-wall portion of the said receptacle; con tainers for the said compartment adapted to be adjusted therein as well as to the heatconducting-wall portion of the said receptacle, substantially as set forth.

8, A device of the character described comprising a receptacle having a doublewalled side and bottom, between which walls is incased insulating material; a heat-conducting wall opposite the bottom wall, a flanged stopper-seat formed at the juncture of the inner and the outer walls of the bottom of the said receptacle: a stopper conr prising a projecting cap having a central body portion, a flange-edged outer rim, an annular groove inside said flange-edged outer rim and an inwardly projecting overlap of the flange edge of the said outer rim and a counterpart to the said projecting cap having a central body portion, a screwthreaded portion, an annular groove corresponding to the said annular groove of the projecting cap and an elastic washer, all the said parts of the said stopper being permanently secured together, the said washer being secured in the annular groove of the said counterpart outside 01" the screw-threaded entering portion of the said stopper; space between the central portions of the said projecting cap and counterpart thereto and insulating material incased in said space and a temperature-controlling cover adapted to be attached in an adjustable manner to, and

outwardly overlapping, the heat-conducting wall portion of the said receptacle all substantially as set forth.

9. A device of the character described comprising a receptacle having a doublewalled side and bottom between which walls is incased insulating material; a heat-conducting wall opposite the said bottom wall; a screw-threaded flanged intake opening through the said double-walled bottom; a stopper for said opening comprising a projecting cap having a central body portion, a flange edged outer rim; an annular groove inside said flange-edged outerrim and an inwardl -projecting overlap of the flange edge of the said outer rim and a counterpart to the said projecting cap having a central body portion a screwihreadec portion, an annular groove corresponding to the said annular groove, of the projectin cap and an elastic washer all the said parts of the said stopper being permanently secured together, the said washer being secur d in the annular groove of the said counterpart outside of the screw-threaded enteringportion of the said stoppemvspace between'the central portions of the said projecting cap and counterpart thereto and insulating material inc-ased in said space; a flanged intake opening through and projecting outwardly from, the side wall of the said receptacle; a stopper for the same comprising a cap with an annular projection, wh' l projection covers the neck of the said intake opening; a spindle permanently secured to and within the said cap; a corlcsleeve permanently secured on the outer surface of the spindle and a cork-plug permanently secured within, the said spindle having flanged ends; and temperaturecontrolling cover adapted to be attached in an adjustable manner to and outwardly overlapping theheat-conducting wall pow tion of the said receptacle all substantially as described.

X 10. The combination in a foot or bed warmer of an openable and (*losable receptacle having a double-Walled side and bottom, between which walls is incased insulating material; a heat-conducting wallopposite thesaidbottom and a screw-threaded flanged stopper seat formed at the juncture of the inner and outer walls of the bottom. said receptacle, substantially as set,

of the forth.

mg material; a lieat conductingwall opposite the said bottom and a screw-threaded fiangedstopper seat formed at the juncture of the inner and outer walls of the bottom or the said receptacle; and atemperature-- controlling cover adapted to be attached, in an adjustable manner, to the heat-conducting-wall portion of the said receptacle.

12, Thecombination ina device of the character described of an openableandiclos able receptacle having a double-walled side and bottom, between'which walls is incased insul ting material; a heat-conducting wall opposite the said bottom and a screwthreaded-fianged stopper seat formed at the juncture of theinner and outer, walls or the bottom of the receptacle; a tempera hire-controlling vcover adapted to be attaehed in an adjustable manner-to the heatconducting-wall portion oi the said re'ceptacle; a supplementary compar ment also adapted to be attached in an adjustable mann o the heat-conductirig-wall portion oi": the said receptacle and the said compartment having an insulated doublewalled side and a heatconuucting topwall and a fitting at its top portion adapted to receive, in an 7 HARRY HUNTER CULESTOOK.

Witnesses: V I i i F. J. GARVIN, P. CAIRNCROSS. 

